Materials Data on Be2BH3O5 by Materials Project

Be2BH3O5 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Be2+ sites. In the first Be2+ site, Be2+ is bonded to four O2- atoms to form corner-sharing BeO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.62–1.65 Å. In the second Be2+ site, Be2+ is bonded to four O2- atoms to form corner-sharing BeO4 tetrahedra. There are a spread of Be–O bond distances ranging from 1.62–1.66 Å. B3+ is bonded in a trigonal planar geometry to three O2- atoms. All B–O bond lengths are 1.38 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a distorted single-bond geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.64 Å) H–O bond length. In the second H1+ site, H1+ is bonded in a distorted linear geometry to two O2- atoms. There is one shorter (1.03 Å) and one longer (1.59 Å) H–O bond length. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a trigonal non-coplanar geometry to one Be2+ and two H1+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to two Be2+ and one B3+ atom. In the third O2- site, O2- is bonded in a trigonal planar geometry to two Be2+ and one B3+ atom. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to two Be2+ and one B3+ atom. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one Be2+ and three H1+ atoms.